package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    UserMapper userMapper;

    @Autowired
    WebSocketServer webSocketServer;

    @Override
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {


        //处理各种业务异常（地址薄为空，购物车数据为空）
        AddressBook addressBook=addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook==null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        ShoppingCart shoppingCart=new ShoppingCart();
        shoppingCart.setUserId(BaseContext.getCurrentId());
       List<ShoppingCart>shoppingCartList= shoppingCartMapper.list(shoppingCart);
       if(shoppingCartList==null||shoppingCartList.size()==0){
           throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
       }
        //向订单表插入数据
        Orders orders=new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setAddress(orders.getAddress());
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(BaseContext.getCurrentId());
        orderMapper.insert(orders);


        //向订单明细表插入n条数据
        List<OrderDetail> orderDetailList=new ArrayList<>();
        for(ShoppingCart cart:shoppingCartList){
            OrderDetail orderDetail=new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);

        //清空当前用户的购物车数据
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());

        //封装VO返回数据
        OrderSubmitVO orderSubmitVO=OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;
    }
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Long userId = BaseContext.getCurrentId();
        Orders ordersDB = orderMapper.getByNumber(outTradeNo,userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        Map map=new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号"+outTradeNo);
        webSocketServer.sendToAllClient(JSONObject.toJSONString(map));
    }

    @Override
    public PageResult pageQuery(int pageNum, int pageSize, Integer status) {
        PageHelper.startPage(pageNum, pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> page=orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list=new ArrayList<>();
        if(page!=null&&page.getTotal()>0){
            for(Orders order:page){
                OrderVO orderVO=new OrderVO();
                BeanUtils.copyProperties(order,orderVO);
                Long orderId=order.getId();
                List<OrderDetail> orderDetails=orderDetailMapper.getByOrderId(orderId);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);

    }

    @Override
    public OrderVO orderDetail(Long id) {
        Orders orders=orderMapper.getById(id);
        OrderVO orderVO=new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(id);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    @Override
    public void userCancel(Long id) throws Exception {
        Orders ordersDB=orderMapper.getById(id);
        if(ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        if(ordersDB.getStatus()>2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);

        }
        Orders orders=new Orders();
        orders.setId(ordersDB.getId());
        if(ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额
            orders.setPayStatus(Orders.REFUND);
        }
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }

    @Override
    public void repetition(Long id) {
        Long userId=BaseContext.getCurrentId();
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(id);
        List<ShoppingCart> shoppingCartList=orderDetailList.stream().map(x->{
            ShoppingCart shoppingCart=new ShoppingCart();
            BeanUtils.copyProperties(x,shoppingCart);
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders>page=orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list=getOrderVOList(page);
        return new PageResult(page.getTotal(), list);

    }

    @Override
    public OrderStatisticsVO statistics() {
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        OrderStatisticsVO orderStatisticsVO=new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;

    }

    @Override
    public void confirm(OrdersConfirmDTO orderConfirmDTO) {
        Orders orders=Orders.builder()
                .id(orderConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders ordersDB=orderMapper.getById(ordersRejectionDTO.getId());
        if(ordersDB==null||!ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Integer payStatus=ordersDB.getPayStatus();
        if(payStatus==Orders.PAID){
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}",refund);
        }
        Orders orders=new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }

    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO)throws Exception {
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void delivery(Long id) {
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }

    @Override
    public void complete(Long id) {
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders orders=orderMapper.getById(id);
        if(orders==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        Map map=new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号:"+orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }


    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        List<OrderVO> list=new ArrayList<>();
        List<Orders> ordersList=page.getResult();
        if(page!=null&&page.getTotal()>0){
            for(Orders orders:ordersList){
                OrderVO orderVO=new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes=getOrderDishes(orders);
                orderVO.setOrderDishes(orderDishes);
                list.add(orderVO);

            }

        }
        return list;

    }
    private String getOrderDishes(Orders orders) {
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(orders.getId());
        List<String> orderDishList=orderDetailList.stream().map(x->{
            String orderDish=x.getName()+"*"+x.getNumber();
            return orderDish;
        }).collect(Collectors.toList());
        return String.join("", orderDishList);
    }

}
